Smoke-consuming furnace



A. c. Mo, 1R. SMOKE CONSUMING FURNACE. APPLICATIO FILEDIULY I6; |919.

Patented Mar. 22, 1921.

2 SHEETS-SHEET l.

A. c. MOTT, 1n. SMOKE CONSUMING FURNACE. APPLICATION FILED IULY-IG, |919. 1,372,534, Patented Mar. 22, 1921.

2 SHEETS-SHEET 2.

XM/fm' UNITED STATES Parent*N orties.

ABRAMI C. MOT'I, JR., OF PHILADELIIIIA, PENNSYLVANIA, ASSIGNOR TC ABRAM COX STVE COTJIPANY, OF IPHILADELPI'A, PENNSYLVANTA, A CORPORATN Oli' PENN? SYLVANIA.

SMOKE-CONSUMING FURNACE.

Specification of Letters Patent. Patented :Mala 22, 1921.

Application filed July 1G, 1919. Serial No. 311,130.

To all whom t may concer/a:

Beit known that I, ABRAM C. Mo'r'r, Jr., a citizen of the United States, residing in Philadelphia, Pennsylvania, have invented certain Improvements in Smoke-Consuming Furnaces, of which the 'following is a speciication.

My invention relates to certain improvements in hotwater or steam boilers used particularly in house heating. e y

One object olf my invention is to provide such a boiler with a smoke consuming chamber so that the' products of combustion, as they pass from the fire boX, will be completely burned before entering the chimney.

A further object of the invention is toline the smoke consuming combustion chamber with material that will become highly heated so as to burn all ot the gases passing through the furnace.

A still further object of the' invention is to locate the combustion chamber so that access can be readily had to the interior thereof :tor examination or for repairs.

t In the accompanying drawings z- Figure l, is a sectional view through a steam boiler furnace of the building heating type illustrating my invention;

Fig. 2, is a sectional view on the line 2 2, Fig. 1;

Fig. 3, is a sectional view on the line 3 3,

Fig.1;

Fig. 4, 1s a detached sectionalperspective view of the casingof the combustion chamber;

Fig. 5, showing the heat ,retaining sections, which are located at one end oi the combustion chamber; t

Fig. 6, shows a section at the opposite end oi' the combustion chamber and illustrates the air passages therein; t

Fig.` 7, is a detached perspective view oi the side heat retaining sections; and

F'gs. 8 and 9, are detached perspective views of the topand bottom heat retaining sections, respectively.

Referring to the drawings, 1 is the base of the furnace. 2 is the fire chamber. 3, 3 are the cast iron boiler sections, each conmating of a body portion extending over the is a detached perspective view hre chamber and having tongues a which extend downward as shown. At each side of each tongue are hollow projections 5 which add to the heat absorbing surface of the boiler. At the rear ot each boiler section is a leg 6 terminating in a mud drum 7. The upper portion ol each section is recessed at each side to form flue passages 8 and 9. The sections are arranged side by side, as in Fig 2; and a series oi complete lines is `thus formed. These hues are cont nected at the 'liront end of the boiler by vertical connecting tues l0. The sections ci the `boiler are coupled together by nipples at the passages l1 so that the water will circulate freely through the several sections. 12 is the intake pipe for the water as itreturns from the system and 13, 13 are the pipes leading from the upper portion oi' the boiler to the system or to a manifold, according to the number of sections composing the boiler. This is a type oi hot water, or steam, boiler used particularly in heating buildings. t

At the back of the furnace structure l locate the smoke consuming combustion chamber 14. The interior of this chamber communicates with the fire chamber 2 through passages l5 at the lower portion ot the combustion chamber 14, and with the tlues 8 through passages 16 at the upper end of the combustion chamber so that the products of combustion circulate in the fire chamber 2 and then enter the combustion chamber lelthrough the passages l5 and then through the passages 16 to the iiues 8 and 9, and `iinally to the passage 17 which communicates with the {ilue bor 18 leading to the chimney. ln. the root ot the combustion chamber is a passage 19 'losed by a damper 20, so that when it is desired to allow the products of combustion to pass directly from the passage 14lto the chimney the damper 20 is opened.

21 is the casing of the combustion cham ber Maud this casing is in the form of a box having passages l5 and 16, as mentioned above, and is closed by a cover plate 22 of any suitable design and preferably made in sections bolted together, as shown in Fig. 3. lnorder to retain a certain. amount of heat in thercombustion chamber, I preferably line the Vcasing 2l with cast iron, tire brick, or other heat retaining sections.

In Fig. 5, I have shown the sections which are located against the Wall 28 of the casing. The upper and lower sections 24C and 25, respectively, are recessed, as Well as the intermediate section 26 so as to form a continuation of the passages l5 and 16. The rear lining section 27 is made as shown in Fig. Gand has ribs 28 at the back so as to form passages 29 and 29a. 30, 3() are inclined slots communicating with the upper air passage 29, and 30a, 3()a are straight slots communicating with the passage 29a. The passages 29 and 29n communicate with air openings in the casing, and back of the lining 27'is a sheet of asbestos 27a, or other heat resistingV material.

The side sections 3l, illustrated in Fig. 7,

are solid With the exception of a clean out I opening 34, and the bottom section 32, Fig.

to the secondary. combustion 9 is also solid. The top section 33 has an opening therein forming a continuation of the flue 19.

The casing 2l may be made in a single piece or in sections secured .together b rivets, or other fastenings, as it will be understood that the boiler to which my invention is applied is a sectional boiler and the number of sections depends upon the area to be heated, and the casing for the combustion chamber ll is made accordingly. Vhere furnaces having a Agiven number of sections are made in large quantities, then the casings, as Well as the linings, may be in single sections, if desired.

ItA Will be seen bythe above invention that the products of combustion passing from the fire chamber donot pass directly to the iiue 8, as formerly, but pass into the secondary combustion chamber 14: Where they come in contact with the highly heated lining of the chamber and at this point air is admitted in the proper proportion, so that the unconsumedgases Will be consumed in the flues 8 and 9 before entering the chimney. I have shown air passages at the upper and lower portions of the combustion chamber. In some instances, one of these passages may be omitted, if found desirable.

l. The combination of a sectional steam boiler furnace having a lire chamber; boiler sections extending over the lire chamber; lues in the boiler section; a secondary combustionv chamber at the rear of the furnace structure communicating at its lower end directly with the ire'chamber and at its upper end Withfone of the lues of the boiler section, said secondary combustion chamber being lined with heat absorbing and retaining material; and means for admitting air chamber, the of combustion air mixing with the products and the Waste gases being thoroughly consumed in the lues leading to the chimney.

2. The combination in a boiler lurnacc, ol

a fire chamber; a series of boiler sections mounted above the lire chamber and having legs extending at the back thereof; lines in the upper portion of the boiler sections: a. secondary combustion chamber located at the back of the structure and having a passage at the bottom connnunicating with the lire chamber of the boiler; and a passage at the top communicating with one of the tlues of the boiler section, the secondary combustion chamber having a lining of heat absorbing and retaining material, the rear lining having an air passage therein communicating with the said secondary combustion chamber so that the products of combustion pass into the chamber from the lire box, the 4Waste products becoming highly heatcd and burning in the fines of the boiler bei'ore reaching the chimney.

3. rlhe combination in a boiler furnace, of a base; a fire chamber; a series of cast iron steam boiler sections mounted above the lire chamber and having legs extending at the back thereof; flues in the upper portion of the boiler section; a secondary combustion chamber at the rear of the yboiler section inclosed in a casing lined with heat absorbing and retaining material, and having passages leading from the fire chamber to the lower portion of the said secondary combustion chamber and from the upper portion of the said chamber to the lues in the upper portion of the boiler, the combustion chamber structuie being supported on the base, the lining of the chamber having an air passage communicating with the atmosphere and with the interior of the chamber so that the products of combustion will become highly heated in the chamber and the unconsumed gases will be consumed in the llues of the boiler.

fl. The combination in a boiler furnace.r of a lire chamber; a series of boiler sections connected together and mounted above the lire chamber, each section having a leg forming the. rear wall of the lire chamber, said boiler sections having fines in the upper portions; a flue box: a. secondary combustion chamber located at the rear of the furnace .and communicating at its lower end with the fire box of the boiler and at its upper end with the flues, said secondary combustion chamber having a lining of heat absorbing and retaining material, a passage communieating with the secondar7 combustion chamber and with the flue box; and a damper arranged to close said passage.

5. The combination in a boiler a base, a lire chamber located above the base; a series of boiler sections supported by the base and extending longitudinally over the fire chamber and at the back thereof; fiues furnace, of

in the upper portions ofthe boiler sections, a mosphere at the lower end and at the upper secondary combustion chamber located at end with the said combustion chamber, so 10 the rear of the boiler sections comprising a that the air will be heated before it enters casing made in sections corresponding to the the chamber; a cover for the said secondary sections oiE the boiler; and a refractory lincombustion chamber so that on the removal ing located Within the casing and also made of the cover the lining` sections can be dein sections, the rear lining having air pastached and removed, if necessar sages therein communicating with the at- ABRAM C. OTT, JR. 

